"However I have already paid to go and see someone who played it, and this was certainly part of my decision to do so. They've probably made more money off me from that than they would have if I bought the flac."

Who's the "they" there? The DJ who played the track or the artist who produced it? Sometimes it seems that in electronic music DJs get more attention/credit/$ than the artists who made the tracks being played. (although I know some DJs are also producers as well, I think they're the exception to the rule)